Mutational modifications of hepatitis A virus proteins 2B and 2C described for cell culture-adapted and attenuated virus are present in wild-type virus populations

Mutational modifications of hepatitis A virus proteins 2B and 2C described for cell...
Weilandt, Rebecca; Paulmann, Dajana; Schlottau, Kore; Vallbracht, Angelika; Dotzauer, Andreas
2014-10-01 00:00:00
Studies have identified certain mutations in the 2B and 2C proteins of hepatitis A virus (HAV) as being essential for efficient growth in cultured cells, and it is assumed that these mutations contribute to the attenuated phenotype. We found that mutations supporting cell culture growth already exist in wild-type HAV populations. This suggests that these variants are not entirely generated de novo but are selected from the wild-type population. In a prolonged case of hepatitis A, we found that sequences associated with cell culture adaptation predominated later in infection. This might suggest selection of an attenuated virus population during a prolonged clinical infection.
http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.pngArchives of VirologySpringer Journalshttp://www.deepdyve.com/lp/springer-journals/mutational-modifications-of-hepatitis-a-virus-proteins-2b-and-2c-NDA78VtMGI

Mutational modifications of hepatitis A virus proteins 2B and 2C described for cell culture-adapted and attenuated virus are present in wild-type virus populations

Abstract

Studies have identified certain mutations in the 2B and 2C proteins of hepatitis A virus (HAV) as being essential for efficient growth in cultured cells, and it is assumed that these mutations contribute to the attenuated phenotype. We found that mutations supporting cell culture growth already exist in wild-type HAV populations. This suggests that these variants are not entirely generated de novo but are selected from the wild-type population. In a prolonged case of hepatitis A, we found that sequences associated with cell culture adaptation predominated later in infection. This might suggest selection of an attenuated virus population during a prolonged clinical infection.

Journal

Archives of Virology
– Springer Journals

Published: Oct 1, 2014

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References

Encyclopedia of virology

Dotzauer, A

Innate and adaptive immune responses against picornaviruses and their counteractions: an overview